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This is a forum for discussion about NetLogo, the agent-based modeling environment from the Center for Connected Learning and Computer-Based Modeling at Northwestern University. Students, teachers, researchers, and independent learners are all welcome.

This is a great place to post about how you're using NetLogo, or questions about how to create models using the NetLogo language and software.

At this point, much of this group's discussion has migrated to the NetLogo Forum.

For questions about creating software using the NetLogo API's, improving the NetLogo application, and creating new extensions for NetLogo, visit the netlogo-devel Google Group.

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Oct 30

NetLogo Conference 2026! Please fill out interest survey

Dear NetLogo Users, The NetLogo Center is excited to announce the first NetLogo user conference in

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NetLogo Conference 2026! Please fill out interest survey

Dear NetLogo Users, The NetLogo Center is excited to announce the first NetLogo user conference in

Oct 30

Oct 23

NetLogo 7.0.1 Released

Dear NetLogo users, The Center for Connected Learning and Computer-Based Modeling at Northwestern

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NetLogo 7.0.1 Released

Dear NetLogo users, The Center for Connected Learning and Computer-Based Modeling at Northwestern

Oct 23

Daniel Vartanian

Oct 13

logolink: An Interface for Running NetLogo Simulations from R

Hi everyone! I'm excited to share [logolink](https://danielvartan.github.io/logolink/), an R

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logolink: An Interface for Running NetLogo Simulations from R

Hi everyone! I'm excited to share [logolink](https://danielvartan.github.io/logolink/), an R

Oct 13

c.pecor...@gmail.com

Oct 9

Only 2 Seats Left – Agent-based & Individual-based Modelling Course

Dear all, Just a quick note: there are only 2 seats left for our “Agent-based and Individual-based

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Only 2 Seats Left – Agent-based & Individual-based Modelling Course

Dear all, Just a quick note: there are only 2 seats left for our “Agent-based and Individual-based

Oct 9

Sep 9

NetLogo 7 is released

Hi NetLogo users, It has been a long time since the last major release of NetLogo. We have not been

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NetLogo 7 is released

Hi NetLogo users, It has been a long time since the last major release of NetLogo. We have not been

Sep 9

Shir-May Rapaport, … Jason Bertsche6

Sep 9

HubNet web export files...?

File size & reliability: Are there practical limits (or browser gotchas) for send-to:file (eg,

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HubNet web export files...?

File size & reliability: Are there practical limits (or browser gotchas) for send-to:file (eg,

Sep 9

Sep 4

Using LLM to discover your "signature style"

I asked this of ChatGPT: "If you have access to the body of work that's been published on

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Using LLM to discover your "signature style"

I asked this of ChatGPT: "If you have access to the body of work that's been published on

Sep 4

Daniel Vartanian, Jacob Kelter2

Sep 3

LogoScope: NetLogo Syntax Highlighting for Visual Studio Code

Very cool! Thanks for contributing this! On Wed, Sep 3, 2025 at 10:11 AM Daniel Vartanian <

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LogoScope: NetLogo Syntax Highlighting for Visual Studio Code

Very cool! Thanks for contributing this! On Wed, Sep 3, 2025 at 10:11 AM Daniel Vartanian <

Sep 3

Aug 13

Let us know if you want to give feedback on NetLogo design decisions

Hi everyone, Sometimes, the NetLogo team wants feedback from users on design decisions we are making.

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Let us know if you want to give feedback on NetLogo design decisions

Hi everyone, Sometimes, the NetLogo team wants feedback from users on design decisions we are making.

Aug 13

Steve Railsback

Aug 8

Short course on scientific modeling with NetLogo

We are excited to announce that registration is open for the upcoming Agent-Based and Individual-

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Short course on scientific modeling with NetLogo

We are excited to announce that registration is open for the upcoming Agent-Based and Individual-

Aug 8

c.pecor...@gmail.com2

Aug 5

Agent-Based and Individual-Based Modelling Using NetLogo course - online, 27 October - 7 November

correct link: https://www.physalia-courses.org/courses-workshops/course52/ On Tuesday, 5 August 2025

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Agent-Based and Individual-Based Modelling Using NetLogo course - online, 27 October - 7 November

correct link: https://www.physalia-courses.org/courses-workshops/course52/ On Tuesday, 5 August 2025

Aug 5

Uri Wilensky, Jacob Kelter3

Aug 1

New release of NetLogo - a beta release of NetLogo 7

Also, we had some issues with our feedback and bugs emails that are now resolved (ccl-feedback@ccl.

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New release of NetLogo - a beta release of NetLogo 7

Also, we had some issues with our feedback and bugs emails that are now resolved (ccl-feedback@ccl.

Aug 1

Carlos Pedro Gonÿffffe7alves

Jul 17

Modeling Commons system not responding

Hi, I've been trying to access my Modeling Commons account with the last valid password but the

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Modeling Commons system not responding

Hi, I've been trying to access my Modeling Commons account with the last valid password but the

Jul 17

‎김윤비(사범대학 과학교육학과), … Paolo Gaudiano3

Jul 15

Persistent "Global variable already exists" error

Hi Yoonbi, When a variable is created in a widget in the interface, it needs to be commented out from

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Persistent "Global variable already exists" error

Hi Yoonbi, When a variable is created in a widget in the interface, it needs to be commented out from

Jul 15

Scratch Cat (Scratchy), … John Chen8

Jul 15

Yes, I did. On Mon, Sep 26, 2022 at 4:56 PM John Chen <yuehanc...@u.northwestern.edu> wrote

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Yes, I did. On Mon, Sep 26, 2022 at 4:56 PM John Chen <yuehanc...@u.northwestern.edu> wrote

Jul 15

Rohan Kapitany, … Jacob Kelter5

Jul 15

Hubnet Tutorial

That would be great! We'll also look into improving the existing documentation. Let us know if

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Hubnet Tutorial

That would be great! We'll also look into improving the existing documentation. Let us know if

Jul 15

Jun 9

GIS extension: Help with gis:apply-coverage for Polygon Shapefile/Lines to Patches

Hey, I'm working on a NetLogo model where I've loaded a raster file as my base map, which

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GIS extension: Help with gis:apply-coverage for Polygon Shapefile/Lines to Patches

Hey, I'm working on a NetLogo model where I've loaded a raster file as my base map, which

Jun 9

c.pecor...@gmail.com

Jun 4

Spatial Data Visualisation in R

Dear all, We're excited to announce our upcoming online course: Spatial Data Visualisation in R

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Spatial Data Visualisation in R

Dear all, We're excited to announce our upcoming online course: Spatial Data Visualisation in R

Jun 4

Darren Schreiber

May 23

Introduction to ABM with NetLogo, Hybrid Course at Essex Summer School, July 7-11, 2025

Excited to be teaching Introduction to hashtagAgent Based Modeling at the Essex Summer School again

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Introduction to ABM with NetLogo, Hybrid Course at Essex Summer School, July 7-11, 2025

Excited to be teaching Introduction to hashtagAgent Based Modeling at the Essex Summer School again

May 23

Apr 28

Getting the NetPrologo extension to work

A recent paper caught my eye: " Mind the Gaps: Logical English, Prolog, and Multi-agent Systems

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Getting the NetPrologo extension to work

A recent paper caught my eye: " Mind the Gaps: Logical English, Prolog, and Multi-agent Systems

Apr 28

jarq...@gmail.com, Jackson Ville3

Apr 14

Using ChatGPt for code visualization

Based on the LIFE model contained in the Netlogo models library, please let me know if anyone spots

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Using ChatGPt for code visualization

Based on the LIFE model contained in the Netlogo models library, please let me know if anyone spots

Apr 14

Aaron Andre Brandes

Apr 14

Please ignore the 2 messages from Jackson Ville

They have no meaningful content Aaron -- Aaron Brandes, Software Developer Center for Connected

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Please ignore the 2 messages from Jackson Ville

They have no meaningful content Aaron -- Aaron Brandes, Software Developer Center for Connected

Apr 14

gladys haywood, … Jackson Ville3

Apr 14

Help with understanding Simple Machine Learning Turtle model

Hj On Tuesday, 1 April 2025 at 16:35:27 UTC+1 Dale Frakes wrote: Hi Anna, this was new to me and the

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Help with understanding Simple Machine Learning Turtle model

Hj On Tuesday, 1 April 2025 at 16:35:27 UTC+1 Dale Frakes wrote: Hi Anna, this was new to me and the

Apr 14

Apr 3

Executing R commands through Netlogo - simpleR extension question

Dear all, First, apologies for the long question. After stumbling upon many issues with the bundled r

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Executing R commands through Netlogo - simpleR extension question

Dear all, First, apologies for the long question. After stumbling upon many issues with the bundled r

Apr 3

Steve Railsback

Mar 17

Last chance: Short course in scientific agent-based modeling with NetLogo, May 26-30th

This week is your last chance to apply for the one-week short course that the NetLogo team, Volker

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Last chance: Short course in scientific agent-based modeling with NetLogo, May 26-30th

This week is your last chance to apply for the one-week short course that the NetLogo team, Volker

Mar 17

Victoria Haskins, Bart de Bruin2

Mar 3

How to make turtles follow a path at different speeds in Netlogo?

Hi Victoria, I answered a similar question on stack overflow last month. Maybe it is helpful https://

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How to make turtles follow a path at different speeds in Netlogo?

Hi Victoria, I answered a similar question on stack overflow last month. Maybe it is helpful https://

Mar 3

Victoria Haskins, … Aaron Andre Brandes6

Mar 3

Is there a way to exclude the previous patch a turtle was on from its neighborhood?

Hi, Although it's not the best tool for your problem the primitive other is sometimes useful for

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Is there a way to exclude the previous patch a turtle was on from its neighborhood?

Hi, Although it's not the best tool for your problem the primitive other is sometimes useful for

Mar 3

Michel Janos, Aaron Andre Brandes2

Mar 3

Hi, The missing step is that you need to click a location in the interface tab to place the plot.

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Hi, The missing step is that you need to click a location in the interface tab to place the plot.

Mar 3

Carlos Paes, … Jacob Kelter4

Feb 27

Issue with NW Extension in NetLogo Web

Thank you both, I will think which is the best alternative. Carlos Em qui., 27 de fev. de 2025 às 15:

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Issue with NW Extension in NetLogo Web

Thank you both, I will think which is the best alternative. Carlos Em qui., 27 de fev. de 2025 às 15:

Feb 27

dr mique, Steve Railsback2

Feb 25

Excel reversing rows x columngs?

Hi-- When you ran BehaviorSpace, you might have chosen the "Table" output format once and

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Excel reversing rows x columngs?

Hi-- When you ran BehaviorSpace, you might have chosen the "Table" output format once and

Feb 25

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